Every home, condominium and townhouse has one. It’s impossible to control. The only thing that is predicable about it is its unpredictability. It feels like it costs more than it’s worth. Most homeowners ban their family members from going near it six months out of the year. What is it? The single room that, no matter how hard you wish, hope and try, is always 10 degrees hotter or 10 degrees colder than the rest of the home.